Water leakage below a patio, often manifesting as stains or falling sheetrock on the ceiling underneath, can result from several common causes. Here are the primary factors:

Poor Roof or Patio Drainage: Inadequate sloping or clogged gutters/downspouts prevent water from flowing away, causing it to pool and seep through the patio structure.

Cracked or Damaged Sealants: Over time, caulking or sealants around patio edges, joints, or fixtures (e.g., railings) can crack, allowing water to penetrate.

Faulty Waterproofing: Insufficient or deteriorating waterproof membranes beneath the patio fail to block water, especially during heavy rain.

Structural Cracks: Settling soil or temperature changes can cause cracks in the patio slab or supporting structure, providing entry points for water.

Improper Installation: If the patio wasn’t installed with proper flashing, vapor barriers, or drainage systems, water can easily leak through.

Clogged or Damaged drain outlets: Clogged or damaged drain outlets will hinder the flow of water out of the patio which results pooling and gradually damage the patio.

Prolonged Weather Exposure: Prolonged exposure to rain, snow, or freeze-thaw cycles can degrade materials, increasing leak risks so regular inspection and maintenance of the patio waterproofing is necessary.

Addressing these issues through regular inspections and timely repairs can prevent further damage.

Thinking about Assessing your patio? Contact our expert design team today 📞 510-545-9622 for a consultation and get one step closer to a fully waterproofed and elegent patio!